Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-13 | 145/90-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.44 (519.2) | 23.28 (591.2) | 2.83 (72) 13.9% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 64.22 (1631.11) | 73.12 (1857.31) | 8.91 (226.19) 13.9% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 5.14 (130.5) | 1.42 (36) 38.1% |
| Revolutions per mile (km) | 986.65 (613.08) | 866.49 (538.41) | -120.16 (-74.66) -12.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.77 mph (36.65 km/h) |
| 25 mph (40.23 km/h) | 28.47 mph (45.81 km/h) |
| 30 mph (48.28 km/h) | 34.16 mph (54.98 km/h) |
| 35 mph (56.33 km/h) | 39.85 mph (64.14 km/h) |
| 40 mph (64.37 km/h) | 45.55 mph (73.3 km/h) |
| 45 mph (72.42 km/h) | 51.24 mph (82.46 km/h) |
| 50 mph (80.47 km/h) | 56.93 mph (91.63 km/h) |
| 55 mph (88.51 km/h) | 62.63 mph (100.79 km/h) |
| 60 mph (96.56 km/h) | 68.32 mph (109.95 km/h) |
| 65 mph (104.61 km/h) | 74.01 mph (119.11 km/h) |
| 70 mph (112.65 km/h) | 79.71 mph (128.28 km/h) |
| 75 mph (120.7 km/h) | 85.4 mph (137.44 km/h) |
| 80 mph (128.75 km/h) | 91.09 mph (146.6 km/h) |
| 85 mph (136.79 km/h) | 96.79 mph (155.76 km/h) |
| 90 mph (144.84 km/h) | 102.48 mph (164.93 km/h) |
| 95 mph (152.89 km/h) | 108.17 mph (174.09 km/h) |
| 100 mph (160.93 km/h) | 113.87 mph (183.25 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2205 | 2562 | 2759 | 2881 | 3012 | 3106 | 3209 | 3331 | 3500 | 3669 | 3857 | 4007 | 4279 | 4579 | 4814 | 4964 | 5048 | 5358 | 5789 | 6728 |
Better Fuel Economy Factory Ratios Increased Power
